package com.atguigu.gulimall.member.exception;

/**
 * @DESCRIPTION: 自定义异常
 * @author: zr
 * @DATE: 2022/12/31 15:54
 */
public class UsernameExistException extends RuntimeException {
    public UsernameExistException() {
        super("用户名已存在");
    }
}
